The centaurs of Greek mythology are creatures that are part human and part horse. They are usually portrayed with the torso and head of a human, and the body of a horse. Centaurs are the followers of the wine god Dionysus and are well known for drunkenness and carrying off helpless young maidens.
If both healthy parents carry the same altered recessive. gene, then each child they have has a 25% (1 in 4) risk of. inheriting the altered gene from both parents and therefore. being affected. For each child, regardless of their sex, the. risk is the same = 25%. Children of couples who are both carriers of the same. altered recessive gene have a 50% (1 in 2) chance of. inheriting one copy of the altered gene from one of their. parents. If this happens, they are healthy carriers. themselves.
However, for males, there only needs to be one copy of an X-linked recessive gene in order for the trait or disorder to be expressed. For example, a woman can carry a recessive gene on one of the X chromosomes unknowingly, and pass it on to a son, who will express the trait:Therefore, half of the daughters have the gene and can pass it to the next generation.The other half do not have the gene and, therefore, cannot pass it on.owever, for males, there only needs to be one copy of an X-linked recessive gene in order for the trait or disorder to be expressed. For example, a woman can carry a recessive gene on one of the X chromosomes unknowingly, and pass it on to a son, who will express the trait: